London has 5 airports, each having a connection to a different train station in London.
Heathrow (LHR):
Option 1 - take the Piccadilly line (tube) from Heathrow to Earl's Court and change to either the Circle or District line to Tower Hill and walk for 5 minutes.
Option 2 - take the LHR Express from LHR to Paddington, and then the Circle line to Tower Hill and walk for 5 minutes.
Gatwick (LGW):
You can take the train to:
London Bridge - from the station, either walk over the London Bridge, and towards Bob W Tower of London, about a 15-minute walk OR take Northern Line one stop to Monument, and walk for 5 minutes.
Blackfriars - either take the Circle or District line to Tower Hill and walk 5 minutes.
Victoria (Gatwick express, currently temp. suspended) - either take the Circle or District line to Tower Hill and walk for 5 minutes.
Stansted (STN):
Take the train to Liverpool Street station, and then walk for 15 minutes or take the Circle line to Tower Hill and walk for 5 minutes.
Luton (LTN):
Take the train to St Pancras International, then take the Circle line to Tower Hill and walk for 5 minutes.
London City Airport (LCY):
Take the Docklands Light Railway (DLR) to Tower Gate, then walk for 7 minutes.
Check CityMapper for real-time routes as trains may be cancelled, delayed, etc.
